Question: What medication can be used to counter drug reactions to (RS)-methadone?
Paraphrase: What drugs can be used to counter drug (RS)-methadone reactions?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q179996 wdt:P769 ?obj . ?obj wdt:P31 wd:Q12140 } 
Answer: clarithromycin, pimozide, azithromycin, droperidol, erythromycin, haloperidol, chlorpromazine, anagrelide, dronedarone, isocarboxazid, amiodarone, quinidine, sotalol, pentamidine, procainamide, terfenadine, procarbazine, sevoflurane, tranylcypromine, flecainide, sulpiride, chloroquine, astemizole, escitalopram, domperidone, moxifloxacin, disopyramide, cisapride, halofantrine, sparfloxacin, phenelzine, dofetilide, ibutilide, bepridil, mesoridazine, probucol, arsenic trioxide, cocaine, thioridazine